/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.hadoop.hive.ql.ddl.workloadmanagement;

import org.antlr.runtime.tree.Tree;
import org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer;

/**
 * Common utilities for Workload Management related ddl operations.
 */
public final class WMUtils {
  private WMUtils() {
    throw new UnsupportedOperationException("WMUtils should not be instantiated");
  }

  public static String poolPath(Tree root) {
    StringBuilder builder = new StringBuilder();
    builder.append(BaseSemanticAnalyzer.unescapeIdentifier(root.getText()));
    for (int i = 0; i < root.getChildCount(); ++i) {
      // DOT is not affected
      builder.append(BaseSemanticAnalyzer.unescapeIdentifier(root.getChild(i).getText()));
    }
    return builder.toString();
  }
}
